of westminster



G. T. BUCKHAM. MOUNTING 0F AUTOMATIC GUNS. APPLICATION nuzo mum. m1.

" .U'NITEDSTATES PATENT OF 7 esonen' momas nucxnam, or wnsrmmsrnn, LONDON, Enemmn, Assmuon r0 vrcxms mmmn, or wasrmms'rnngnuenmn. i

MOUNTING or AUTOMATIC GUNS.

a To all whom it may concern and useful Improvements in or Relatin to the Mountings of Automatic Guns, of w ich the followingis a specification.

This invention relates to the mountings of automatic guns.

According to the invention the gun in order to enable its height to be varied while a. orlinks, the upper ends of which are pivotthe mounting itself occupies a fixed position, .isconnected to the .crosshead by means of a movable support comprising twoarms ally connected to suitable parts of the gun and their lower endsare pivotally connected to a base unember or bracket which is pivoted at its forward end to the crosshead of the gun and connected at its rear end to the usual elevating, gear carried by the usual rearward extension of the crosshead. A suitable device is provided for holding the arms at any desired angle in relation to a the base member or bracket.

In order that the invention may be clearly understood and readily carried into effect the same will be described more fully with reference to the accompanying drawings in which i Figures 1 and 2 are side elevations of a tripod gun n'iounting constructed in accordai'ice with the invention, these figures showing the gun in its fully raisedand lowered positions respectively.

aforesaid movable support for the A is the tralning socket of the mountin and A "is the crosshead having the usua rearward extension as that carries the elevating gear a. B is the gun. B, B are the two arms or links that constitute the an and B is the base member or bracket tween which and the gun the said arms are arranged.

In the example shown the forward end of the bracket B is disposed between the side checks of thecrosshead and is "pivotally connectedytheretoby a pin passed through a hole in the base member and through the hole in the crosshead side cheeks'that usually receives the trunnion pin. The rear end of C (or lugs) b adapted, to receive a pin b w ich passes through the the bracket has a 111 acter.

upper end of the screw of the elevating ar i j a, as is usual in gun mountings of this c iarnected at its upper end to the trunnion bracket of the gun .by a pin b, and atits lower end to the base member B. by the above-mentioned pin 6 The rear arm B is pivotally connected at its lowerend by a suitable pin to the base member B and at its upper end by a. pin b to theusual elevatlng lug or In s on the mechanism casing of the. gun. he aforesaid device for holding'the arms B, B? rigid comprises, in

l which is pivotthe example shown, a rod ally connected at c to the front arm B near the upper end thereof and extends rear wardly anddownwardly to a sleeve 0', through which the rod passes; this sleeveis.

pivoted on the pin that connects the rear arm B to the base member B and is pro- The front arm B is pivotally con-' vided withfa clamp which is operated byv a handle a and which, by engaging with the red C, serves to hold 1t and therefore-the arms B, B? in'the adjusted position with the gun at the desired" height. When the elevating gear a is operated to adjust the gun for range,. the base member B is rocked,

about the pin 6 It will be understood that the arms B, B the base member B and the rod Cv constitute a self-contained unit which can be readily interposed between the mounting "and the gun so that the exist- 1 ing mountings canbereadily converted. It will also be understood thatthe basemember B 1s constructed to suit the particular type of tripod or pedestal mounting to which it is to be attached. v a

It will be seen that in the example shown the gun is lowered by moving it rearward;

it is however to be understood that thearrangement might be so modified that the lowering of the gun would be effected by moving it in a forward direction. Inth1s case the rod 0 might be arranged between the arm B and the in b which would then carr the sleeve a i What claim and desire tosecure by'Letters Patent of thejUnited States is 1; In a mountin for an automatic gun, the combination 0 a crosshead, an elevating gear, a support comprising a base memher or bracket pivoted to thecrosshead. and

connected to the elevating gear, a pair of parallel-motion arms or links pivotally connected at opposite ends to the base member and to the gun, and connecting means between one arm and the base member for rigidly holding said arms in adjusted angula'r position wlth relation to the base member; substantially as described.

2. In a mounting for an automatic gun, the combination of a crosshead, an elevating gear, a support'comprising a basemember or bracket pivoted to the crosshead and connected to the elevating gear and two parallel motion arms or links arrangedbetween the gun and the said base member, and means for rigidly holding said arms in any adjusted position, said holding means comprising a rod pivoted to one of the arms near the upper end thereof, a swiveling block through which the rod passes carried by the pivot pin connecting the other arm to the base member and a clamp provided on said block to engage the said Tod. In testimony whereof I afiix my signature in the presence of two witnesses.

GEORGE THOMAS BUCKHAM l/Vitnesses:

JNo R. CAswELL, GLaDYs M. BARDEN. 

